grid_to_spec

stsynphot.catalog.grid_to_spec(gridname, t_eff, metallicity, log_g)[source]

Extract spectrum from given catalog grid parameters. Interpolate if necessary.

Grid parameters are read with get_catalog_index().

Parameters:
gridname{‘ck04models’, ‘k93models’, ‘phoenix’}
Model to use:

  • ck04models - Castelli & Kurucz (2004)

  • k93models - Kurucz (1993)

  • phoenix - Allard et al. (2009)

t_effstr, float or astropy.units.quantity.Quantity

Effective temperature of model. If not Quantity, assumed to be in Kelvin. If string (from parser), convert to Quantity.

metallicitystr or float

Metallicity of model. If string (from parser), convert to float.

log_gstr or float

Log surface gravity for model. If string (from parser), convert to float.

Returns:
spsynphot.spectrum.SourceSpectrum

Empirical source spectrum.

Raises:
stsynphot.exceptions.ParameterOutOfBounds

Grid parameter out of bounds.

synphot.exceptions.SynphotError

Invalid inputs.